• Title/Summary/Keyword: Plant Distribution

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Distribution of Indicator Plant of Climate Change in Major Islands of the Korean Peninsula (한반도 주요 도서 지역의 기후변화 지표 식물 분포)

  • Kim, Hyun Hee;Mizuno, Kazuharu;Lee, Ho Sang;Koo, Jae Gyun;Kong, Woo Seok
    • Journal of Environmental Science International
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    • v.30 no.1
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    • pp.29-43
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    • 2021
  • This study analyzed the status of climate-change indicator plants native to the main islands of the Korean peninsula, while elucidating their distribution characteristics. Information on flora from over 129 island locations, comprising more than 100 species of native plants, was collected, compiled into a database, and utilized as raw data. The distribution of 193 climate-change indicator plants was confirmed. The distribution area of broadleaf evergreen trees and ferns, including Mallotus japonicus and Cyrtomium falcatum, was relatively wide. In contrast, the distribution of common northern plants such as Corydalis turtschaninovii and Malus baccata was limited. If global warming persists, northern plant distribution is expected to decrease rapidly in the Korean Peninsula island region, while the northern limit line of the southern plants is expected to migrate further northward. During this process, it is likely that the plant congregation structure and species diversity within the island region will change dynamically. In this study, comparative analyses between species and regions were conducted by assessing the relative frequency of their occurrence, and six types of botanical geographic distribution patterns were noted.

Effects of Plant Cultivation with Microbial Inoculant, Mity-Gro$^{TM}$ (미생물제 Mity-Gro$^{TM}$의 작물재배효과에 관한 연구)

  • 윤세영
    • Korean Journal of Organic Agriculture
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    • v.8 no.1
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    • pp.139-145
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    • 1999
  • The experiment was conducted to determine the effects of Plant growth and the microbial distribution in soils treated with microbial products, Mity-GroTM. The results from this experiment were as follows ; 1. Plant height of Tomato and Pepper were significantly increased at 30 days after planted in soils treated with Mity-GroTM. Therefore, treatment of microbial products, Mity-GroTM, was considered to contribute the plant growth at early stage. 2. Microbial distribution in soils treated with Mity-GroTM was significantly changed at specific mcirobial population. However, The ratio of bacteria/actinomycetes in the plot treated with Mity-GroTM was significantly enhanced.

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A Plans for Preservation and Distribution of Ilex cornuta Community Mt. Keumsung (Naju, Chollanamdo)

  • Kim, Ha-Song
    • Plant Resources
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    • v.1 no.2
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    • pp.105-108
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    • 1998
  • These studies had performed a plans for preservation and distribution of Ilex cormuta community Mt. Keumsung($35^{\circ}05'\;N,\;126^{\circ}04'\;E$) in Naju, Chonnam from Arpil, 1997 to October by Braun-Blanquet' method(1964). According to the vegetation table of community, the plant communities of the investigated sites were classified Ilex corunta-Trachelospermum asiaticum var. intermedium commnity. Now there still remains the natural environment to be developed in coast district around the riverside distributing Ilex cornuta Lindl., so it has scientifically high value to predict change of the ecosystem and preserve the community distribution. It needs plan for preservation high value to predict change of the ecosystem and preserve the community distribution. It needs plan for preservation

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Effect of Sclerotial Distribution Pattern of Sclerotinia sclerotiorum on Colonizing Ability of Trichoderma harzianum

  • Bae, Yeoung-Seuk;Park, Kyung-Seok;Knudsen, Guy R.
    • Mycobiology
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    • v.29 no.1
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    • pp.54-57
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    • 2001
  • Field studies were conducted over two seasons during the summers of 1997 and 1998 to investigate the effects of different spatial arrangements(random or highly aggregated) of sclerotia of Sclerotinia sclerotiorum and alginate pellet types(bran or polyethylene glycol) on colonization of sclerotia by Trichoderma spp. Treatment with alginate pellets increased the mean percentages of sclerotia colonized by Trichoderma spp. in both years. Distribution patterns of sclerotia affected the mean percentage of sclerotia colonized by Trichoderma spp. in both years, indicating that a highly aggregated distribution of sclerotia was more favorable to colonization by Trichoderma spp. The effects of the different pellet types(bran or PEG) were not siginificant in both years(P>0.05). The application of higher densities(200 pellets per 1 $m^2$) of alginate pellets resulted in higher mean percentages of sclerotia colonized by Trichoderma spp. in 1998(P<0.05), but did not in 1997.

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Antibacterial and virucidal activity of 28 extracts from plants endemic to Korea against Bacillus cereus, Staphylococcus aureus, and murine norovirus

  • Hyun-Joo Chang;Ji Hye Han;Nari Lee;Sung-Wook Choi
    • Journal of Applied Biological Chemistry
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    • v.66
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    • pp.345-352
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    • 2023
  • Antibacterial activity against foodborne bacteria (Bacillus cereus, Staphylococcus aureus, Salmonella Enteritidis) and inhibitory activity against murine norovirus, a human norovirus surrogate, of 28 extracts from plants endemic to Korea were investigated in this study. All plant extracts showed antibacterial activity only against gram-positive bacteria, B. cereus and S. aureus. Extracts from Callistemon speciosus and Nymphaea tetragona showed inhibition zones of 16.54 and 24.35 mm against B. cereus and S. aureus, respectively, presenting the highest antibacterial activities recorded in this study. Among all samples, Ardisia japonica extract at concentrations of 100 and 200 ㎍/mL showed the highest virucidal activities of 96.6 and 100.0%, respectively. Ardisia japonica, Duchesnea indica, Polygonum aviculare, and Geum japonicum extracts showed high antibacterial and virucidal activity simultaneously without Raw 264.7 cell cytotoxicity. These plant extracts may serve as potential antimicrobials to control foodborne infections.

Bioindicator at $A_2O$ Wastewater Treatment Plant ($A_2O$ 공법 처리장의 Bioindicator)

  • Lee, Chan-Hyung;Moon, Kyung-Sook
    • Journal of Environmental Health Sciences
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    • v.31 no.1
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    • pp.55-60
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    • 2005
  • The occurrence and abundance of protozoa at advanced wastewater treatment plant were compared with operating parameters and effluent quality using statistical procedures. In correlation analysis between the distribution of protozoa and operating parameters, the distribution of protozoa was showed the operating condition of plant. Regression analysis between the distribution of protozoa and effluent quality up to 7 days, showed the R-square values of most regression equation were more than 0.6 and constant was higher than slope and could indicate effluent quality from sampling day to 7 days. Once enough data concerning protozoa, operating parameters and effluent has been gathered, the operator has a valuable tool for predicting plant performance and near-future effluent quality based on microscopic examination. Plant operator manipulates operating conditions if he knows near-future data of effluent is deteriorating. Perhaps more importantly it can be used to actually control the plant to adjust the operating conditions to obtain the protozoal populations that have been shown to provide the best effluent quality.

Development of Flux Mapping Technique for the Solar Power Tower Plant (타워형 태양열발전을 위한 열유속 분포 측정기술 개발)

  • Chai, Kwan-Kyo;Lee, Hyun-Jin;Kim, Jong-Kyu;Yoon, Hwan-Ki;Lee, Sang-Nam;Kang, Yong-Heack;Seo, Tae-Beom
    • 한국태양에너지학회:학술대회논문집
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    • 2012.03a
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    • pp.274-279
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    • 2012
  • Daegu Solar Power Tower Plant of 200 kW thermal capacity was developed for the first time in Korea, 2011. Measurement of the heat flux distribution is essential to evaluate the solar energy concentrated by reflectors and to design a suitable receiver. The flux mapping technique, which uses a radiometer and a diffuse plate, is common for measurement of the heat flux distribution. Because the solar power tower plant has a wide concentration area, the flux mapping technique using a fixed diffuse plate is difficult to apply. Therefore, the flux distribution in the solar power tower plant should be measured by the flux mapping technique using a small moving bar. In this study, we measured flux distributions with the moving-bar system developed at the KIER solar furnace and evaluated its applicability for the solar power tower plant.

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Prunus glandulosa Thunb.(Rosaceae) and its distribution on the Korean Peninsula

  • Kim, Jung-Hyun;Kim, Sun-Yu;Hyun, Chang Woo;Park, Jeong-Mi;Kim, Jin-Seok
    • Journal of Species Research
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    • v.9 no.2
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    • pp.117-121
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    • 2020
  • Prunus glandulosa Thunb. [=Cerasus glandulosa (Thunb.) Sokolov] (Rosaceae) is native to the warmtemperate region of China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hebei, Henan, Jiangsu, Shaanxi, Shandong, Sichuan, Yunnan, and Zhejiang Provinces). It is naturalized in the United States (i.e. Alabama, Michigan and North Carolina) and Canada (Ontario). This species, previously only recorded as introduced or cultivated plants on the Korean Peninsula, was confirmed to be naturally distributed in the southwestern coast islands(i.e. Geomun-do, Chuja-do and an uninhabited island in Shinan-gun of Jeollanam-do). Prunus glandulosa Thunb. is distinguished from a related taxon P. japonica var. nakaii (H. Lév.) Rehder by pedicel 8-12 (-16) mm long, linear stipules, glabrous style, and pink petals. The morphological characters and illustration of P. glandulosa Thunb. are provided with line drawings and photographs from the natural habitat. In addition, it is likely that a new habitat will be found by plant biodiversity investigations through the southwestern coast islands. Further research is needed to determine its population size, distribution, and threats, as well as identify appropriate locations for conservation collection of germplasm.

Diversity, Distribution, and Host Plant of Endophytic Fungi: A Focus on Korea

  • Ju-Kyeong Eo;Jae-Wook Choi;Ahn-Heum Eom
    • Mycobiology
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    • v.50 no.6
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    • pp.399-407
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    • 2022
  • Endophytic fungi occupy inner plant tissues, which results in various interactions between the fungus and host. Studies on endophytic fungi have been conducted in Korea for over 30 years. This paper summarizes the published results of those studies. The endophytic fungi of approximately 132 plant species in Korea have been studied since the 1990s, resulting in over 118 publications. The host plants featured in these studies comprised 3 species of mosses, 34 species of woody plants, and 95 species of herbaceous plants. At the family level, the most studied plants were members of the Poaceae family, covering 18 species. Regionally, these studies were conducted throughout Korea, but over half of the studies were conducted in Gyeongsangbuk-do, Gangwon-do, and Chungcheongnam-do. Relatively few studies have been conducted in a metropolis such as Seoul. We confirmed 5 phyla, 16 classes, 49 orders, 135 families, 305 genera, and 855 taxa of endophytic fungi, excluding Incertae sedis, whose relationship with others are unknown. Most of the endophytic fungi belonged to Ascomycota (93.2%), and a few belonged to Basidiomycota (3.6%). Since the diversity of endophytic fungi differs depending on the host plant, plant tissue, and distribution region, future studies should be conducted on multiple host plants and in various regions. Future studies on endophytic fungi are expected to broaden, including genomics and taxonomic and ecological studies of secondary metabolites.

Variation of Growth Characteristics in Natural crossed Population of Paeonia lactiflora Pallas (자연교잡 실생작약 집단의 생육특성 변이)

  • Kim, Se-Jong;Kim, Jeong-Hye;Park, Jun-Hong;Park, So-Deuk;Choi, Boo-Sull
    • Korean Journal of Medicinal Crop Science
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    • v.7 no.3
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    • pp.177-184
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    • 1999
  • This study was carried out to find growth characters and distribution of above and underground in natural crossed population of Paeonia lactiflora Pallas. Sprouting time was 1 April to 15 April, and distribution of stem length ranged from 21 to 80cm, and 3 to 18 in stem number. Distribution of root length ranged from 12 to 59cm, root number per plant was 73 to 4, root yield per plant was highly varied by 37 to 882g, and larger root above 750g was occupied by 7.1%. Paeoniflorin content was 1.9 to 10.29% and plants containing higher paeoniflorin was 14.3%. Root length and yield had highly positive correlation. Root diameter and stem length was also positively correlated.

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